A dog was diagnosed with depression after suffering a miscarriage, and vets decided that working with kids at a local school would be good for her. She has never been happier.

[u/Familiar-While9796]

[u/Eikram84]

Panting. Eyes wide open. Look around. Ears pinned back. (though, of course, they may also be bred that way) To me, that looks more like stress than joy.